Optical network unit

Details Optical network unit Optical network unit

2006-07-11

2006-07-11

Payne, David C. (Department: 2638)

Optical communications

Multiplex

Optical local area network

C398S060000, C398S070000, C398S164000

Reexamination Certificate

active

07076167

ABSTRACT:
The present invention includes an optical network unit ONU, connected to a backbone network including a host digital terminal HDT and a digital subscriber line access multiplexor DSLAM of a high-speed data service system, and connected to multiple subscribers, for performing subscriber concentration functions, while the ONU includes a common unit board CUB, interfaced with the backbone network, for extracting an ATM cell, performing a full-duplex ATM cell processing function, performing a transmission test for the ATM cell and associated data, and controlling mutual operations among each of the unit boards and data flows; multiple xDSL service unit boards for performing a subscriber interface after converting the ATM cell from the CUB to an analog signal and thereof, for dividing the ATM cell into a high frequency component for data area and a low frequency component for a voice area, and for transmitting the ATM cell to the subscribers, or vice versa; and a shelf including multiple slots for plugging-in multiple unit boards, and for linking the packaged unit boards with a common bus in the shelf.

REFERENCES:
“600 Mbps 150 Mbps Asymmetric ATM-PDS Transmission Equipment for ATM Video Services and ISDN,” by Ichibangase et al., in Technical Report of IEICE vol. No. CS97-29, pp. 13-18.
“Instant Transfer of Huge Contents on an Optical Subscriber Network”, by Yoshikawa et al., in Technical Report of IEICE vol. No. CS96-33, pp. 9-14.

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